scholarly journals Forecasting the distribution of Marmorkrebs, a parthenogenetic crayfish with high invasive potential, in Madagascar, Europe, and North America

2011 ◽  
Vol 6 (1) ◽  
pp. 55-67 ◽  
Author(s):  
Teresa Feria ◽  
Zen Faulkes
2020 ◽  
Author(s):  
Jeanine Vélez-Gavilán

Abstract Jatropha integerrima is a shrub to small tree native to Cuba, which has been introduced into tropical and subtropical areas worldwide as an ornamental species. Although it has become naturalized in some areas, it is not listed as an invasive species. The Center for Invasive Species and Ecosystem Health only lists J. integerrima for comparison with other Jatropha species. J. integerrima can occasionally escape from cultivation in disturbed areas in Florida, and sometimes occurs in warmer parts of Australia. The species has little to no invasive potential in North America and a low invasion risk in Hawaii, USA.


2016 ◽  
Vol 38 (1) ◽  
pp. 29 ◽  
Author(s):  
Francieli De Fátima Bomfim ◽  
Tatiane Mantovano ◽  
Leilane Talita Fatoreto Schwind ◽  
Fabiana Palazzo ◽  
Claudia Costa Bonecker ◽  
...  

Processes related to biological invasion of inland waters have become a major issue due to the increasing number of cases associated with the potential effects of invasions. Kellicottia bostoniensis and K. longispina are rotifer species originating from North America and have become invasive in several continents. In this sense, this study carried out a scientometric analysis to analyze the geographical distribution and identify patterns of occurrence as well as to fill gaps on the knowledge of these species. The survey was based on articles indexed in databases from 1896 to 2014. There is a greater scientific knowledge of these species in the temperate region, and these are present in many different environments. In Brazil, there is a very small number of studies, and no record of K. longispina. Therefore, it is noteworthy the importance of studies on the occurrence and abundance of these species in poorly studied areas, such as subtropical and tropical regions, for a better understanding of their invasive potential, given the potential effects on different communities, which can affect the structure and dynamics of environments. 


2006 ◽  
Vol 84 (1) ◽  
pp. 133-142 ◽  
Author(s):  
Linda M. Wilson ◽  
Judith Fehrer ◽  
Siegfried Bräutigam ◽  
Gitta Grosskopf

During the summer of 2001, a newly recorded species of exotic hawkweed ( Hieracium glomeratum Froel.) for North America was identified from specimens collected in southeastern British Columbia, Canada, and eastern Washington state, United States. The specimens had previously been identified as the closely related Hieracium caespitosum Dumort. DNA fingerprints of plants from different localities proved to be identical. Their clonality, along with a spot-like distribution, indicates that this apomictic species probably originated from a single introduction from Europe, which subsequently spread. This species adds to the complex of 14 other exotic Hieracium species belonging to the Eurasian subgenus Pilosella that are adventive in the United States and Canada. A distribution map of the native and adventive range of H. glomeratum, and a key to distinguish it from related species in subgenus Pilosella that occur in North America are provided. The evolutionary and invasive potential of H. glomeratum is also discussed.


2006 ◽  
Vol 87 (3) ◽  
pp. 427-432 ◽  
Author(s):  
A. Townsend Peterson ◽  
Monica Papeş ◽  
Mary G. Reynolds ◽  
Neil D. Perry ◽  
Britta Hanson ◽  
...  

Weed Science ◽  
2003 ◽  
Vol 51 (6) ◽  
pp. 863-868 ◽  
Author(s):  
A. Townsend Peterson ◽  
Monica Papes ◽  
Daniel A. Kluza

Ecological niche modeling, a new methodology for predicting the geographic course of species' invasions, was tested based on four invasive plant species (garlic mustard, sericea lespedeza, Russian olive, and hydrilla) in North America. Models of ecological niches and geographic distributions on native distributional areas (Europe and Asia) were highly statistically significant. Projections for each species to North America—effectively predictions of invasive potential—were highly coincident with areas of known invasions. Hence, in each case, the geographic invasive potential was well summarized in a predictive sense; this methodology holds promise for development of control and eradication strategies and for risk assessment for species' invasions.


Author(s):  
Karvita B. Ahluwalia ◽  
Nidhi Sharma

It is common knowledge that apparently similar tumors often show different responses to therapy. This experience has generated the idea that histologically similar tumors could have biologically distinct behaviour. The development of effective therapy therefore, has the explicit challenge of understanding biological behaviour of a tumor. The question is which parameters in a tumor could relate to its biological behaviour ? It is now recognised that the development of malignancy requires an alteration in the program of terminal differentiation in addition to aberrant growth control. In this study therefore, ultrastructural markers that relate to defective terminal differentiation and possibly invasive potential of cells have been identified in human oral leukoplakias, erythroleukoplakias and squamous cell carcinomas of the tongue.


Sign in / Sign up

Export Citation Format

Share Document